Baron Dark is the main villain of the series Skeleton Warriors.
The greedy and evil baron tried to seize the Lightstar crystal for himself, and caused it to break in two. His half turned him into a living skeleton who has the power to turn any person with the slightest bit of darkness in his or her heart into a skeleton warrior like himself. Baron turns them into skeleton warriors with "Heartstones", and he says "Darkest Soul, Evil's Courier, Serve me as a Skeleton Warrior". He is obsessed with defeating the Legion of Light, and taking control of both halves of the Lightstar Crystal, thereby granting absolute power for himself.